Potassium pyrosulfite - CP, ≥95% , CAS No.16731-55-8

CAS: 16731-55-8 Cat. No.: P110489 Peso molecular: 222.32 Número EC: 240-795-3
Disponible para pedir
GRADE & PURITY CP ? Chemically Pure grade — moderate purity above technical grade but below analytical. Use for general lab reactions where ultra-low impurities aren't critical. ≥95%
Synonyms
POTASSIUM METABISULFITE|16731-55-8|Potassium disulfite|Potassium pyrosulfite|Dipotassium pyrosulfite|Sobisu|potassium metabisulphite|Potassium pentaoxodisulfate|Ins-224|Potassium metabisulfite [NF]|Potassium metabisulfite (e 224)|65OE787Q7W|Dipotassium di
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Estado
Price
Qty
25g
P110489-25g
3
13,90US$
100g
P110489-100g
3

14,90US$

17,90US$
Guardar 3,00 US$ (16.76%)
500g
P110489-500g
3

20,90US$

24,90US$
Guardar 4,00 US$ (16.06%)
Enter a quantity for the sizes you want to add.
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Why this grade

CP, ≥95% CP for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 13 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Sinónimos
POTASSIUM METABISULFITE | 16731-55-8 | Potassium disulfite | Potassium pyrosulfite | Dipotassium pyrosulfite | Sobisu | potassium metabisulphite | Potassium pentaoxodisulfate | Ins-224 | Potassium metabisulfite [NF] | Potassium metabisulfite (e 224) | 65OE787Q7W | Dipotassium di
Especificaciones y pureza
CP, ≥95%
Condiciones de almacenamiento de almacenamiento
Room temperature
Enviado en
Normal
Grado
CP
Pureza
≥95%
Nombres e identificadores
Sonrisas canónicas[O-]S(=O)S(=O)(=O)[O-].[K+].[K+]
InChIKeyRWPGFSMJFRPDDP-UHFFFAOYSA-L
INCHI1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
Isómeros SMILES [O-]S(=O)S(=O)(=O)[O-].[K+].[K+]
Número ONU 1759
Grupo de embalaje I
Peso molecular 222.32
Reaxy-Rn 14412766
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=14412766&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassMixed metal/non-metal compounds
ClaseAlkali metal oxoanionic compounds
SubclassAlkali metal dithionites
Intermediate Tree Nodes Not available
Direct ParentAlkali metal dithionites
Alternative Parents Inorganic salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Alkali metal dithionite - Inorganic oxide - Inorganic salt
DescripciónThis compound belongs to the class of inorganic compounds known as alkali metal dithionites. These are inorganic compounds in which the largest oxoanion is dithionite, and in which the heaviest atom not in an oxoanion is an alkali metal.
External Descriptors Not available
Estructura 3D
Modelo de Estructura Química Interactiva





Certificados (CoA, COO, BSE/TSE y tabla de análisis)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

8 results found

Lot NumberCertificate TypeFechaArticulo
I2213082Certificate of AnalysisJun 15, 2026 P110489
I2213095Certificate of AnalysisJun 15, 2026 P110489
A2220221Certificate of AnalysisOct 29, 2025 P110489
A2220225Certificate of AnalysisOct 29, 2025 P110489
A2220226Certificate of AnalysisOct 29, 2025 P110489
A1819047Certificate of AnalysisAug 18, 2025 P110489
I2504566Certificate of AnalysisJun 14, 2024 P110489
E1907173Certificate of AnalysisFeb 13, 2023 P110489
Propiedades químicas y físicas
Punto de fusión (°C)190°C
Peso molecular222.330 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count6
Rotatable Bond Count0
Exact Mass221.846 Da
Monoisotopic Mass221.846 Da
Topological Polar Surface Area125.000 Ų
Heavy Atom Count9
Formal Charge0
Complexity136.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count3
Preguntas frecuentes y artículos
Citations of This Product
Referencias
1. Yijie Wu, Xin Wang, Tiantian She, Taozhu Li, Yunheng Wang, Zhe Xu, Xin Jin, Haiou Song, Shaogui Yang, Shiyin Li, Shicheng Yan, Huan He, Limin Zhang, Zhigang Zou.  (2023)  Iron 3D-Orbital Configuration Dependent Electron Transfer for Efficient Fenton-Like Catalysis.  Small,  20  (2): (2306464).  [PMID:37658488] [10.1002/smll.202306464]
2. Yifan Liu, Jiazuo Zhou, Yudong Li, Ziyao Wang, Xiaohan Sun, Haiyue Yang, Chengyu Wang.  (2023)  Intermittent Exothermic and Self-Healing Hydrated Salt Gels for Advanced Thermal Management of Underfloor Radiant Heating System.  Small,  19  (50): (2305134).  [PMID:37626457] [10.1002/smll.202305134]
3. Kongming Fan, Yan Li, Qiaofeng Fu, Jinmin Wang, Yong Lin, Linyu Qiu, Li Ran, Junli Yang, Chunyan Yang.  (2023)  Bio-Assay-Guided Isolation of Fractions and Constituents with Antioxidant and Lipid-lowering Activity from Allium cepa.  Antioxidants,  12  (7): (1448).  [PMID:37507986] [10.3390/antiox12071448]
4. Ruiying Li, J. Paul Chen, Viatcheslav Freger.  (2023)  A new fabrication approach for mixed matrix membrane fabricated with interstitially sealed MOF nanoparticles.  JOURNAL OF MEMBRANE SCIENCE,      [PMID:] [10.1016/j.memsci.2023.121357]
5. Shi MingYue, Jiang LiJie, Yu ChaoJie, Dong XiaoRu, Yu QingYu, Yao MengMeng, He ShaoShuai, Yue ZhiWei, Yao FangLian, Zhang Hong, Sun Hong, Li JunJie.  (2022)  A robust polyacrylic acid/chitosan cryogel for rapid hemostasis.  Science China-Technological Sciences,  65  (5): (1029-1042).  [PMID:] [10.1007/s11431-021-1986-9]
6. Shian Zhong, Yanyue Kong, Ling Zhou, Chengyun Zhou, Xiaona Zhang, Yan Wang.  (2013)  Efficient conversion of myricetin from Ampelopsis grossedentata extracts and its purification by MIP-SPE.  JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES,      [PMID:24321759] [10.1016/j.jchromb.2013.11.036]
7. Yifan Liu, Jiazuo Zhou, Yudong Li, Xiaohan Sun, Ziyao Wang, Haiyue Yang, Chengyu Wang.  (2024)  A Cellulose Salt Gel with Mechanical Transformation and Thermal Control.  ADVANCED FUNCTIONAL MATERIALS,      [PMID:] [10.1002/adfm.202400203]
8. Xiao Xiao, Guowei Shan, Hong Gao, Zhe Ling, Yujia Tong, Xiaohui Ju, Weixing Li.  (2024)  Combinational strategy of chemical graft and layer-by-layer assembly of novel nanocomposite membranes fabrication for heavy metal ion capture.  APPLIED SURFACE SCIENCE,      [PMID:] [10.1016/j.apsusc.2024.160590]
9. Liu Kai, Lian Yinyin, Xie Xingyun, Gao Yuyang, Song Jiajia, Suo Huayi, Zhang Yu.  (2025)  Enhancing blueberry wine quality and antioxidant capacity through mixed fermentation with S. cerevisiae and O. oeni.  npj Science of Food,  (1): (1-9).  [PMID:40140680] [10.1038/s41538-024-00363-x]
10. Zhuojun Jiang, Yufeng Liang, Shuyao Xiong, Guo Li, Qian Zhang, Benzheng Xia, Liangrong Yang, Zheng Li.  (2024)  Synergistic solvent extraction of boric acid by trioctylamine and 2-hydroxydodecanoic acid.  CHINESE JOURNAL OF CHEMICAL ENGINEERING,      [PMID:] [10.1016/j.cjche.2024.06.009]
11. Yinyin Lian, Yingmei Meng, Mei Wang, Jiajia Song, Huayi Suo, Yu Zhang.  (2025)  Pre- and post-transformation changes in two mulberry varieties for semi-sweet wine production.  Food Chemistry-X,      [PMID:40698370] [10.1016/j.fochx.2025.102728]
12. Rui Liao, Xiongjun Xiao, Huiling Huang, Kangjie Yu, Jianxia Tan, Yue Wang, Cong Li, Siyu Li, Yi Ma.  (2025)  Effect of Yeast Polysaccharides Replacing Sulfur Dioxide on Antioxidant Property and Quality Characteristics of Cabernet Sauvignon Wines.  Foods,  14  (18): (3188).  [PMID:41008162] [10.3390/foods14183188]
13. Wei Xiao, Jian-Qiang Chen, Jie Wu.  (2025)  Radical sulfonylation with sulfur dioxide surrogates.  CHEMICAL SOCIETY REVIEWS,      [PMID:40498470] [10.1039/D4CS01312C]
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